KR20210021157A - Fuel gas supply system - Google Patents

Fuel gas supply system Download PDF

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Publication number
KR20210021157A
KR20210021157A KR1020190098618A KR20190098618A KR20210021157A KR 20210021157 A KR20210021157 A KR 20210021157A KR 1020190098618 A KR1020190098618 A KR 1020190098618A KR 20190098618 A KR20190098618 A KR 20190098618A KR 20210021157 A KR20210021157 A KR 20210021157A
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South Korea
Prior art keywords
storage tank
pressure
gas
boil
fuel
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KR1020190098618A
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Korean (ko)
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김현철
박경령
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삼성중공업 주식회사
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Priority to KR1020190098618A priority Critical patent/KR20210021157A/en
Publication of KR20210021157A publication Critical patent/KR20210021157A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H21/00—Use of propulsion power plant or units on vessels
    • B63H21/38—Apparatus or methods specially adapted for use on marine vessels, for handling power plant or unit liquids, e.g. lubricants, coolants, fuels or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
    • B63B25/02—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
    • B63B25/08—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid
    • B63B25/12—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed
    • B63B25/16—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed heat-insulated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0203—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels characterised by the type of gaseous fuel
    • F02M21/0215—Mixtures of gaseous fuels; Natural gas; Biogas; Mine gas; Landfill gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02M21/023—Valves; Pressure or flow regulators in the fuel supply or return system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/06—Apparatus for de-liquefying, e.g. by heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
    • F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • F17C13/025—Special adaptations of indicating, measuring, or monitoring equipment having the pressure as the parameter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/04—Arrangement or mounting of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C9/00—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/01—Propulsion of the fluid
    • F17C2227/0128—Propulsion of the fluid with pumps or compressors
    • F17C2227/0157—Compressors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2265/00—Effects achieved by gas storage or gas handling
    • F17C2265/05—Regasification
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2265/00—Effects achieved by gas storage or gas handling
    • F17C2265/06—Fluid distribution
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0102—Applications for fluid transport or storage on or in the water
    • F17C2270/0105—Ships
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/30—Use of alternative fuels, e.g. biofuels

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Ocean & Marine Engineering (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

Disclosed is a fuel supply system. According to an embodiment of the present invention, the fuel supply system includes: a first storage tank storing liquefied gas and boil off gas thereof at a first pressure; a second storage tank storing the liquefied gas and the boil off gas thereof at a second pressure greater than the first pressure; and a compression part pressurizing the boil off gas in accordance with a storage condition of the second storage tank so as to store the boil off gas supplied from the first storage tank in the second storage tank.

Description

연료공급시스템{FUEL GAS SUPPLY SYSTEM}Fuel supply system {FUEL GAS SUPPLY SYSTEM}

본 발명은 연료공급시스템에 관한 것이다.The present invention relates to a fuel supply system.

온실가스 및 각종 대기오염 물질의 배출에 대한 국제해사기구(IMO)의 규제가 강화됨에 따라 조선 및 해운업계에서는 기존 연료인 중유, 디젤유의 이용을 대신하여, 청정 에너지원인 천연가스를 선박의 연료가스로 이용하는 경우가 많아지고 있다.As the regulations of the International Maritime Organization (IMO) on the emission of greenhouse gases and various air pollutants are strengthened, the shipbuilding and shipping industries use natural gas, a clean energy source, instead of the existing fuel oil and diesel oil. It is increasingly used as.

연료가스 중에서 널리 이용되고 있는 천연가스(Natural Gas)는 메탄(Methane)을 주성분으로 하며, 통상적으로 그 부피를 1/600로 줄인 액화가스(Liquefied Gas) 상태로 변화된다.Natural gas, which is widely used among fuel gases, has methane as its main component, and is usually changed to a liquefied gas state whose volume is reduced to 1/600.

액화가스는 선체에 단열 처리되어 설치되는 저장탱크에 수용되어 저장 및 수송된다. 그러나 액화가스를 완전히 단열시켜 수용하는 것은 실질적으로 불가능하므로, 외부의 열이 저장탱크의 내부로 지속적으로 전달되어 저장탱크의 내부에 증발가스가 발생한다.Liquefied gas is stored and transported by being accommodated in a storage tank installed in an insulated hull. However, since it is practically impossible to completely insulate and accommodate the liquefied gas, external heat is continuously transferred to the interior of the storage tank, and evaporation gas is generated inside the storage tank.

이러한 증발가스는 저장탱크의 압력에 변화를 주게 되고, 저장탱크로부터 공급된 액화가스를 기화시켜 엔진의 연료로 공급하는 기화기 및 엔진의 입력 조건을 변화시켜 결과적으로 엔진의 출력을 가변화시킨다.The boil-off gas changes the pressure of the storage tank, and changes the input condition of the carburetor and the engine that vaporizes the liquefied gas supplied from the storage tank and supplies the fuel to the engine, resulting in variable engine output.

종래에는 저장탱크에 저장된 액화가스를 이용하여 증발가스를 줄이는 방법이 공개된 바 있으며, 관련된 기술로서 한국등록특허 제10-0814593호(2008.03.11. 등록일)를 참조하기 바란다.Conventionally, a method of reducing boil-off gas using liquefied gas stored in a storage tank has been disclosed, and as a related technology, refer to Korean Patent Registration No. 10-0814593 (Registration Date on Mar 11, 2008).

한국등록특허 제10-0814593호(2008.03.11. 등록일)Korean Patent Registration No. 10-0814593 (2008.03.11. Registration date)

본 발명의 실시 예는 제1압력을 가진 제1저장탱크로부터 제1압력보다 큰 제2압력을 가진 제2저장탱크로 증발가스를 압축시켜 보내고, 제1저장탱크 및 제2저장탱크의 액화가스를 각각의 수요처로 안정적이고 효율적으로 공급할 수 있는 연료공급시스템을 제공하고자 한다.According to an embodiment of the present invention, the boil-off gas is compressed and sent from a first storage tank having a first pressure to a second storage tank having a second pressure greater than the first pressure, and the liquefied gas of the first storage tank and the second storage tank It is intended to provide a fuel supply system that can supply stably and efficiently to each customer.

본 발명의 일 측면에 따르면, 제1압력으로 액화가스 및 이의 증발가스를 저장하는 제1저장탱크; 상기 제1압력보다 큰 제2압력으로 액화가스 및 이의 증발가스를 저장하는 제2저장탱크; 및 상기 제1저장탱크로부터 공급받은 증발가스를 상기 제2저장탱크에 저장하기 위해 상기 증발가스를 상기 제2저장탱크의 저장 조건에 맞게 가압시키는 압축부;를 포함하는 연료공급시스템이 제공될 수 있다.According to an aspect of the present invention, a first storage tank for storing the liquefied gas and the boil-off gas thereof at a first pressure; A second storage tank for storing the liquefied gas and its boil-off gas at a second pressure greater than the first pressure; And a compression unit that pressurizes the boil-off gas according to the storage condition of the second storage tank to store the boil-off gas supplied from the first storage tank in the second storage tank. have.

상기 제1저장탱크로터 공급된 액화가스를 메인 엔진의 연료공급조건에 맞게 기화시키는 고압기화기와, 상기 기화된 유체를 상기 메인 엔진의 연료로 공급하는 제1연료공급라인을 더 포함할 수 있다.A high-pressure carburetor for vaporizing the liquefied gas supplied to the first storage tank according to a fuel supply condition of the main engine, and a first fuel supply line for supplying the vaporized fluid as fuel of the main engine may further be included.

상기 제2저장탱크로터 공급된 액화가스를 발전용 엔진의 연료공급조건에 맞게 기화시키는 저압기화기와, 상기 기화된 유체를 상기 발전용 엔진의 연료로 공급하는 제2연료공급라인을 더 포함할 수 있다.A low pressure carburetor for vaporizing the liquefied gas supplied to the second storage tank in accordance with the fuel supply condition of the engine for power generation, and a second fuel supply line for supplying the vaporized fluid as fuel of the engine for power generation. have.

상기 제1저장탱크, 압축부 및 제2저장탱크를 연결하는 압축라인과, 상기 제1저장탱크의 압력을 측정하는 압력측정기와, 상기 압축라인 상에 마련되며, 상기 압력측정기에 의해 측정된 압력 값에 따라 개폐 정도가 제어되는 제어밸브를 더 포함할 수 있다.A compression line connecting the first storage tank, the compression unit and the second storage tank, a pressure measuring device for measuring the pressure of the first storage tank, and a pressure provided on the compression line and measured by the pressure measuring device It may further include a control valve for controlling the degree of opening and closing according to the value.

본 발명의 실시 예에 따른 연료공급시스템은 제1압력을 가진 제1저장탱크로부터 제1압력보다 큰 제2압력을 가진 제2저장탱크로 증발가스를 압축시켜 보내고, 제1저장탱크 및 제2저장탱크의 액화가스를 각각의 수요처로 안정적으고 효율적으로 공급할 수 있다.A fuel supply system according to an embodiment of the present invention compresses and sends boil-off gas from a first storage tank having a first pressure to a second storage tank having a second pressure greater than the first pressure, and sends the first storage tank and the second storage tank. The liquefied gas from the storage tank can be supplied stably and efficiently to each customer.

본 발명의 효과들은 이상에서 언급한 효과들로 제한되지 않으며, 언급되지 않은 또 다른 효과들은 청구범위의 기재로부터 당업자에게 명확하게 이해될 수 있을 것이다.The effects of the present invention are not limited to the effects mentioned above, and other effects that are not mentioned will be clearly understood by those skilled in the art from the description of the claims.

도 1은 본 발명의 실시 예에 따른 연료공급시스템을 나타낸다.1 shows a fuel supply system according to an embodiment of the present invention.

이하에서는 본 발명의 실시 예들을 첨부 도면을 참조하여 상세히 설명한다. 이하에 소개되는 실시 예들은 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에게 본 발명의 사상이 충분히 전달될 수 있도록 하기 위해 예로서 제공되는 것이다. 본 발명은 이하 설명되는 실시 예들에 한정되지 않고 다른 형태로 구체화될 수도 있다. 본 발명을 명확하게 설명하기 위하여 설명과 관계없는 부분은 도면에서 생략하였으며 도면들에 있어서, 구성요소의 폭, 길이, 두께 등은 편의를 위하여 과장되어 표현될 수 있다. 명세서 전체에 걸쳐서 동일한 참조번호들은 동일한 구성요소들을 나타낸다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The embodiments introduced below are provided as examples in order to sufficiently convey the spirit of the present invention to those of ordinary skill in the art. The present invention is not limited to the embodiments described below and may be embodied in other forms. In order to clearly describe the present invention, portions irrelevant to the description are omitted from the drawings, and in the drawings, the width, length, thickness, etc. of components may be exaggerated and expressed for convenience. The same reference numbers throughout the specification indicate the same elements.

도 1을 참조하면, 본 발명의 실시 예에 따른 연료공급시스템(100)은 제1압력으로 액화가스 및 이의 증발가스를 저장하는 제1저장탱크(110)와, 제1압력보다 큰 제2압력으로 액화가스 및 이의 증발가스를 저장하는 제2저장탱크(120)와, 제1저장탱크(110)로부터 공급받은 증발가스를 제2저장탱크(120)의 저장 조건에 맞게 가압시키는 압축부(130)를 포함한다. 압축부(130)에 의해 가압된 증발가스는 압축라인(L1)을 통해 제2저장탱크(120)에 저장된다.Referring to FIG. 1, a fuel supply system 100 according to an embodiment of the present invention includes a first storage tank 110 storing liquefied gas and its boil-off gas at a first pressure, and a second pressure greater than the first pressure. The second storage tank 120 for storing the liquefied gas and the boil-off gas thereof, and a compression unit 130 that pressurizes the boil-off gas supplied from the first storage tank 110 according to the storage conditions of the second storage tank 120 ). The boil-off gas pressurized by the compression unit 130 is stored in the second storage tank 120 through the compression line L1.

또, 연료공급시스템(100)은 제1저장탱크(110)로터 공급된 액화가스를 메인 엔진(M/E, Main Engine)의 연료공급조건에 맞게 기화시키는 고압기화기(112)와, 고압기화기(112)에 의해 기화된 유체를 메인 엔진(M/E)의 연료로 공급하는 제1연료공급라인(L11)을 포함한다.In addition, the fuel supply system 100 vaporizes the liquefied gas supplied from the first storage tank 110 in accordance with the fuel supply condition of the main engine (M/E, Main Engine), a high-pressure carburetor 112, and a high-pressure carburetor ( It includes a first fuel supply line (L11) supplying the fluid vaporized by 112 as fuel of the main engine (M/E).

또, 연료공급시스템(100)은 제2저장탱크(120)로터 공급된 액화가스를 발전용 엔진(G/E, Generator Engine)의 연료공급조건에 맞게 기화시키는 저압기화기(122)와, 저압기화기(122)에 의해 기화된 유체를 발전용 엔진(G/E)의 연료로 공급하는 제2연료공급라인(L12)을 포함한다.In addition, the fuel supply system 100 vaporizes the liquefied gas supplied from the second storage tank 120 in accordance with the fuel supply condition of a power generation engine (G/E, Generator Engine), a low pressure carburetor 122, and a low pressure carburetor. It includes a second fuel supply line (L12) for supplying the fluid vaporized by (122) as fuel for the power generation engine (G/E).

또, 연료공급시스템(100)은 제1저장탱크(110)의 압력을 측정하는 압력측정기(140)와, 압축라인(L1) 상에 마련되며, 압력측정기(140)에 의해 측정된 압력 값에 따라 개폐 정도가 제어되는 제어밸브(150)를 포함할 수 있다.In addition, the fuel supply system 100 is provided on the pressure measuring device 140 for measuring the pressure of the first storage tank 110, the compression line (L1), and the pressure value measured by the pressure measuring device 140 Accordingly, it may include a control valve 150 for controlling the degree of opening and closing.

이러한 연료공급시스템(100)은 각종 액화가스 운반선, 액화가스 RV(Regasification Vessel), LNG FPSO(Floating, Production, Storage and Off-loading), LNG FSRU(Floating, Storage and Regasification Unit) 및 액화가스를 연료로 사용하는 컨테이너선, 탱커선, 벌커선 등을 포함하는 선박에 적용될 수 있다. 이하, 각 구성요소에 대해서 구체적으로 설명한다.This fuel supply system 100 fuels various liquefied gas carriers, liquefied gas RV (Regasification Vessel), LNG FPSO (Floating, Production, Storage and Off-loading), LNG FSRU (Floating, Storage and Regasification Unit), and liquefied gas. It can be applied to ships including container ships, tanker ships, bulker ships, etc. Hereinafter, each component will be described in detail.

상술한 제1저장탱크(110)와 제2저장탱크(120)는 LNG(Liquefied Natural Gas), LPG(Liquefied Petroleum Gas), DME(Dimethylether), 에탄(Ethane) 중 어느 하나를 저장할 수 있으나 이에 한정되는 것은 아니다. 제1저장탱크(110)와 제2저장탱크(120)는 단열상태를 유지하면서 연료를 액화상태로 저장하는 멤브레인형 탱크, SPB형 탱크, Type C 탱크 등을 포함할 수 있다. The above-described first storage tank 110 and second storage tank 120 may store any one of LNG (Liquefied Natural Gas), LPG (Liquefied Petroleum Gas), DME (Dimethylether), and ethane, but limited thereto. It does not become. The first storage tank 110 and the second storage tank 120 may include a membrane-type tank, an SPB-type tank, a Type C tank, etc. that store fuel in a liquefied state while maintaining an adiabatic state.

제1저장탱크(110)는 제2저장탱크(120)에 비해 사이즈가 월등히 큰 저압탱크로 사용될 수 있으며, 예컨대 2bar 정도의 저압으로 액화가스를 저장할 수 있다. 이러한 제1저장탱크(110)는 메인 엔진(M/E) 전용으로 사용될 수 있다.The first storage tank 110 may be used as a low pressure tank having a significantly larger size than the second storage tank 120, and may store liquefied gas at a low pressure of, for example, 2 bar. This first storage tank 110 may be used exclusively for the main engine (M/E).

제1저장탱크(110)는 저압탱크로서 액화가스의 압력 및 온도의 변화가 적어 내부 펌프(미도시)를 통해 균일한 품질의 액화가스를 제1연료공급라인(L11)을 통해 고압기화기(112)로 보낼 수 있다.The first storage tank 110 is a low-pressure tank and has a small change in pressure and temperature of the liquefied gas, so that the liquefied gas of uniform quality through an internal pump (not shown) is supplied to the high-pressure vaporizer 112 through the first fuel supply line L11. ) Can be sent.

즉, 제1연료공급라인(L11)을 통해 제1저장탱크(110)로부터 고압기화기(112)로 보내진 액화가스의 온도, 밀도, 압력 등은 거의 균일한 상태이며, 고압기화기(112)에 의해 기화된 후 메인 엔진(M/E)으로 공급되는 유체 또한 온도, 밀도, 압력 등이 거의 균일하다. 이를 통해 메인 엔진(M/E)의 출력이 안정화될 수 있다.That is, the temperature, density, pressure, etc. of the liquefied gas sent from the first storage tank 110 to the high pressure vaporizer 112 through the first fuel supply line L11 are almost uniform, and the high pressure vaporizer 112 The fluid supplied to the main engine (M/E) after vaporization also has almost uniform temperature, density, and pressure. Through this, the output of the main engine (M/E) may be stabilized.

반면, 제2저장탱크(120)는 예컨대 4bar 내지 10bar 정도로 제1저장탱크(110)에 비해 고압으로 액화가스를 저장하는 고압탱크일 수 있다. 이러한 제2저장탱크(120)는 발전용 엔진(G/E) 전용으로 사용될 수 있다.On the other hand, the second storage tank 120 may be a high-pressure tank that stores liquefied gas at a higher pressure than the first storage tank 110, for example, about 4 to 10 bar. This second storage tank 120 may be used exclusively for power generation engines (G/E).

제2저장탱크(120)는 내부 펌프(미도시)에 의해 액화가스를 제2연료공급라인(L12)을 통해 저압기화기(122)로 보낼 수 있다.The second storage tank 120 may send liquefied gas to the low pressure vaporizer 122 through the second fuel supply line L12 by an internal pump (not shown).

저압기화기(122)는 제2저장탱크(120)로터 공급된 액화가스를 발전용 엔진(G/E)의 연료공급조건에 맞게 기화시킨다.The low-pressure carburetor 122 vaporizes the liquefied gas supplied to the second storage tank 120 in accordance with the fuel supply condition of the power generation engine (G/E).

제2저장탱크(120)로부터 발전용 엔진(G/E)에 공급되는 액화가스의 양은 상대적으로 적으므로 저압기화기(122)로 공급되는 액화가스의 압력과 온도가 변동되더라도 발전용 엔진(G/E)의 운전에 적합한 상태로 변환하여 공급하기에 용이하다.Since the amount of liquefied gas supplied from the second storage tank 120 to the power generation engine (G/E) is relatively small, even if the pressure and temperature of the liquefied gas supplied to the low pressure carburetor 122 fluctuates, the power generation engine (G/E) It is easy to convert and supply to a state suitable for the operation of E).

압축부(130)는 제1저장탱크(110)로부터 공급받은 증발가스를 제2저장탱크(120)의 저장 조건에 맞게 가압시키고, 압축부(130)에 의해 가압된 증발가스는 압축라인(L1)을 통해 제2저장탱크(120)에 저장된다.The compression unit 130 pressurizes the boil-off gas supplied from the first storage tank 110 in accordance with the storage conditions of the second storage tank 120, and the boil-off gas pressurized by the compression unit 130 is a compression line (L1). ) Is stored in the second storage tank 120 through.

압축라인(L1)은 제1저장탱크(110), 압축부(130) 및 제2저장탱크(120)를 연결한다.The compression line L1 connects the first storage tank 110, the compression unit 130, and the second storage tank 120.

압축부(130)는 도시하지는 않았으나 압축기와 냉각기가 교차로 배치된 다단 구성으로 이루어질 수 있다.Although not shown, the compression unit 130 may have a multi-stage configuration in which a compressor and a cooler are disposed at an intersection.

압력측정기(140)는 제1저장탱크(110)의 압력을 측정하며, 압축라인(L1) 상에 마련된 제어밸브(150)는 압력측정기(140)에 의해 측정된 압력 값이 설정 값을 초과한 경우, 개방될 수 있다.The pressure measuring device 140 measures the pressure of the first storage tank 110, and the control valve 150 provided on the compression line L1 has a pressure value measured by the pressure measuring device 140 exceeding a set value. If so, it can be opened.

이를 통해, 서로 다른 압력을 가진 제1저장탱크(110)로부터 제2저장탱크(120) 쪽으로 제1저장탱크(110) 내부에서 발생한 증발가스의 이동이 이루어질 수 있다.Through this, the boil-off gas generated inside the first storage tank 110 may be moved from the first storage tank 110 having different pressures to the second storage tank 120.

이와 같이 제1압력을 가진 제1저장탱크(110)로부터 제1압력보다 큰 제2압력을 가진 제2저장탱크(120)로 증발가스를 압축시켜 보내어 증발가스 발생에 따른 문제점을 해소시킬 수 있다.As described above, the boil-off gas is compressed and sent from the first storage tank 110 having the first pressure to the second storage tank 120 having a second pressure greater than the first pressure, thereby solving the problem caused by the generation of the boil-off gas. .

또, 제1저장탱크(110)와 메인 엔진(M/E) 간의 연료공급라인 및 제2저장탱크(120)와 발전용 엔진(G/E) 간의 연료공급라인을 각각 구분하여 마련하고, 각 저장탱크(110,120)의 압력 특성에 따른 연료공급을 해당 연료공급라인을 통해 각각 수행함으로써, 안정적이고 효율적인 연료공급 및 유지보수가 이루어질 수 있다.In addition, a fuel supply line between the first storage tank 110 and the main engine (M/E) and a fuel supply line between the second storage tank 120 and the power generation engine (G/E) are separately provided, and each By performing fuel supply according to the pressure characteristics of the storage tanks 110 and 120 through the respective fuel supply lines, stable and efficient fuel supply and maintenance can be achieved.

이상에서는 특정의 실시 예에 대하여 도시하고 설명하였다. 그러나, 본 발명은 상기한 실시 예에만 한정되지 않으며, 발명이 속하는 기술분야에서 통상의 지식을 가진 자라면 이하의 청구범위에 기재된 발명의 기술적 사상의 요지를 벗어남이 없이 얼마든지 다양하게 변경 실시할 수 있을 것이다.In the above, specific embodiments have been illustrated and described. However, the present invention is not limited to the above-described embodiments, and those of ordinary skill in the art to which the invention pertains can perform various changes without departing from the gist of the technical idea of the invention described in the following claims. I will be able to.

100: 연료공급시스템
110: 제1저장탱크 112: 고압기화기
120: 제2저장탱크 122: 저압기화기
130: 압축부 L1: 압축라인
L11: 제1연료공급라인 L12: 제2연료공급라인100: fuel supply system
110: first storage tank 112: high pressure vaporizer
120: second storage tank 122: low pressure carburetor
130: compression part L1: compression line
L11: first fuel supply line L12: second fuel supply line

Claims (4)

제1압력으로 액화가스 및 이의 증발가스를 저장하는 제1저장탱크;
상기 제1압력보다 큰 제2압력으로 액화가스 및 이의 증발가스를 저장하는 제2저장탱크; 및
상기 제1저장탱크로부터 공급받은 증발가스를 상기 제2저장탱크에 저장하기 위해 상기 증발가스를 상기 제2저장탱크의 저장 조건에 맞게 가압시키는 압축부;를 포함하는 연료가스공급시스템.A first storage tank for storing the liquefied gas and its boil-off gas at a first pressure;
A second storage tank for storing liquefied gas and its boil-off gas at a second pressure greater than the first pressure; And
And a compression unit for pressurizing the boil-off gas according to the storage condition of the second storage tank to store the boil-off gas supplied from the first storage tank in the second storage tank. 제1항에 있어서,
상기 제1저장탱크로터 공급된 액화가스를 메인 엔진의 연료공급조건에 맞게 기화시키는 고압기화기와,
상기 기화된 유체를 상기 메인 엔진의 연료로 공급하는 제1연료공급라인을 더 포함하는 연료가스공급시스템.The method of claim 1,
A high-pressure carburetor for vaporizing the liquefied gas supplied to the first storage tank according to the fuel supply condition of the main engine,
The fuel gas supply system further comprising a first fuel supply line for supplying the vaporized fluid as fuel of the main engine. 제1항에 있어서,
상기 제2저장탱크로터 공급된 액화가스를 발전용 엔진의 연료공급조건에 맞게 기화시키는 저압기화기와,
상기 기화된 유체를 상기 발전용 엔진의 연료로 공급하는 제2연료공급라인을 더 포함하는 연료가스공급시스템.The method of claim 1,
A low-pressure carburetor for vaporizing the liquefied gas supplied to the second storage tank in accordance with a fuel supply condition of an engine for power generation,
A fuel gas supply system further comprising a second fuel supply line for supplying the vaporized fluid as fuel of the power generation engine. 제1항에 있어서,
상기 제1저장탱크, 압축부 및 제2저장탱크를 연결하는 압축라인과,
상기 제1저장탱크의 압력을 측정하는 압력측정기와,
상기 압축라인 상에 마련되며, 상기 압력측정기에 의해 측정된 압력 값에 따라 개폐 정도가 제어되는 제어밸브를 더 포함하는 연료가스공급시스템.The method of claim 1,
A compression line connecting the first storage tank, the compression unit and the second storage tank,
A pressure measuring device for measuring the pressure of the first storage tank,
The fuel gas supply system further comprises a control valve provided on the compression line and controlling an opening/closing degree according to a pressure value measured by the pressure measuring device.
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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100814593B1 (en) 2007-03-21 2008-03-17 대우조선해양 주식회사 Method for decreasing generation of boil-off gas within lng storage tank

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100814593B1 (en) 2007-03-21 2008-03-17 대우조선해양 주식회사 Method for decreasing generation of boil-off gas within lng storage tank

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